Surface plasmon resonance imaging detection of silver nanoparticle-tagged immunoglobulin

Paul, Sharmistha; Paul, Deepen; Fern, George R.; Ray, Asim K.

doi:10.1098/rsif.2010.0747

Cited by 36 publications

(23 citation statements)

References 38 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A high surface coverage is seen for the PU-Ag nanoparticles ( Figure 2 e); solvent exposure was likely to have led to sub-surface particle penetration. Ag nanoparticles (AgNPs) of increased size ranging from 30 to 290 nm were coated on the PU-AgNPs composite film compared to the original 30–40 nm [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial, Mechanical and Thermal Studies of Silver Particle-Loaded Polyurethane

Paul

Roohpour

et al. 2013

JFB

Self Cite

View full text Add to dashboard Cite

Silver-particle-incorporated polyurethane films were evaluated for antimicrobial activity towards two different bacteria: Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Distributed silver particles sourced from silver nitrate, silver lactate and preformed silver nanoparticles were mixed with polyurethane (PU) and variously characterized by field emission scanning electron microscopy (FESEM), fourier transform infra-red (FTIR) spectroscopy, X-ray diffraction (XRD) and contact angle measurement. Antibacterial activity against E.coli was confirmed for films loaded with 10% (w/w) AgNO3, 1% and 10% (w/w) Ag lactate and preformed Ag nanoparticles. All were active against S. aureus, but Ag nanoparticles loaded with PU had a minor effect. The apparent antibacterial performance of Ag lactate-loaded PU is better than other Ag ion-loaded films, revealed from the zone of inhibition study. The better performance of silver lactate-loaded PU was the likely result of a porous PU structure. FESEM and FTIR indicated direct interaction of silver with the PU backbone, and XRD patterns confirmed that face-centred cubic-type silver, representative of Ag metal, was present. Young’s modulus, tensile strength and the hardness of silver containing PU films were not adversely affected and possibly marginally increased with silver incorporation. Dynamic mechanical analysis (DMA) indicated greater thermal stability.

show abstract

Section: Resultsmentioning

confidence: 99%

Antimicrobial, Mechanical and Thermal Studies of Silver Particle-Loaded Polyurethane

Paul

Roohpour

et al. 2013

JFB

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ideally, the physico-chemical properties of the capsule allow for preferential interaction with a specific type of cell [ 5 , 7 ]. Alternatively, magnetic nanoparticles that accumulate in certain tissues can be used to detect and image disease [ 2 , 9 ]. However, significant questions remain regarding how altering the physico-chemical properties of nanoparticles during synthesis influences the cellular internalization of the nanoparticle, and hence influences the efficacy of the putative therapy [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

An analytical approach for quantifying the influence of nanoparticle polydispersity on cellular delivered dose

Johnston

Faria

Crampin

2018

J. R. Soc. Interface.

View full text Add to dashboard Cite

Nanoparticles provide a promising approach for the targeted delivery of therapeutic, diagnostic and imaging agents in the body. However, it is not yet fully understood how the physico-chemical properties of the nanoparticles influence cellular association and uptake. Cellular association experiments are routinely performed in an effort to determine how nanoparticle properties impact the rate of nanoparticle–cell association. To compare experiments in a meaningful manner, the association data must be normalized by the amount of nanoparticles that arrive at the cells, a measure referred to as the delivered dose. The delivered dose is calculated from a model of nanoparticle transport through fluid. A standard assumption is that all nanoparticles within the population are monodisperse, namely the nanoparticles have the same physico-chemical properties. We present a semi-analytic solution to a modified model of nanoparticle transport that allows for the nanoparticle population to be polydisperse. This solution allows us to efficiently analyse the influence of polydispersity on the delivered dose. Combining characterization data obtained from a range of commonly used nanoparticles and our model, we find that the delivered dose changes by more than a factor of 2 if realistic amounts of polydispersity are considered.

show abstract

“…At the same time, along with the fabrication of Ag nanostructures, a peak was observed at $380 nm near the bandgap, which can be due to the quadrupolar resonance of Ag nanostructures [39] and it was constantly observed in the reflectance spectra without a shift. Also, an absorption valley was observed at $450 nm along with the strong reflectance shoulder over the VIS-NIR region [40]. The absorption valley was nearly constant at $450 between 150 and 300 8C due to the similar morphology and gradually red shifted to $495 nm between 350 and 650 8C likely due to the absorption band shift by the increased size of Ag nanostructures [39].…”

Section: Originalmentioning

confidence: 91%

Fabrication of Ag nanostructures by the systematic control of annealing temperature and duration on GaN (0001) via the solid state dewetting

Pandey

Kunwar

Sui

et al. 2016

Physica Status Solidi (a)

View full text Add to dashboard Cite

The gradual evolution of Ag nanostructures in terms of the configuration, size, and density of via the solid state dewetting is demonstrated on GaN (0001) by the systematic control of annealing temperature and duration with various Ag film thickness. Upon the annealing between 150 and 700 °C with the 20 nm Ag film, the hillocks, voids, irregular, and round dome shaped Ag nanoparticles (NPs) are fabricated based on various growth mechanisms: i.e., thermal diffusion and sublimation as well as the surface energy minimization. On the other hand, along with the systematic control of annealing duration between 0 and 3600 s with 10 nm Ag film 700 °C, the Ag NPs show gradually decreased size and density based on the concurrent influence of the Ostwald's ripening and sublimation of Ag atoms. The Raman, photoluminescence, and reflectance spectroscopy of the resulting Ag NPs are characterized in accordance with the various morphology evolution of Ag nanostructures.

show abstract

Surface plasmon resonance imaging detection of silver nanoparticle-tagged immunoglobulin

Cited by 36 publications

References 38 publications

Antimicrobial, Mechanical and Thermal Studies of Silver Particle-Loaded Polyurethane

Antimicrobial, Mechanical and Thermal Studies of Silver Particle-Loaded Polyurethane

An analytical approach for quantifying the influence of nanoparticle polydispersity on cellular delivered dose

Fabrication of Ag nanostructures by the systematic control of annealing temperature and duration on GaN (0001) via the solid state dewetting

Contact Info

Product

Resources

About